Manchester Memoirs, Vol. xliii. (1899), No. 3. 95 



a keel. Legs, especially the tibiae and tarsi, very thickly 

 covered with stiff, black hairs. Wings uniformly coloured, 

 except for a small hyaline spot at the base of the cubital, 

 and a more elongated one touching the lower part of the 

 discoidal nervure in front ; the transverse median nervure 

 is received immediately in front of the basal nervure, 

 almost touching it. Abdomen smooth, shining; the petiole 

 depressed at the base, the middle indistinctly triangularly 

 raised. 



Microbes. 



The two species here described agree better with this 

 genus rather than with Earinus, with which they agree in 

 some other respects. They agree also with Disophrys 

 in the second transverse cubital nervure emitting a short 

 branch, and one of the species {tuberculatiis) approximates 

 to it by having a horn between the antennae. Apart from 

 the marked distinction in coloration our two species may 

 be separated as follows : — 



A stout tubercle berween the antennse, the meso- 



pleural suture smooth. M. tuherculatus. 



No tubercle between the antenna, the mesopleural 



furrow bearing oblique keels. M. fumipennis. 



Microbes tuberculatus, sp. nov. 



Ferrugineus, flagello antennariim abdominisque apice 

 nigris ; alts flavo-hyalinis, macula substigmatali nigra, 

 apice fiifnato. 



Long. 10 ; terebra 6 mm. 



Antennae as long as the body, black, the scape rufous. 

 Head shining, impunctate; the face sparsely covered with 

 short, soft, white hair ; the palp i are thickly covered with 

 long, white hair ; between the antennae is a stout plate, 

 which becomes gradually smaller behind and is rounded 

 in front. Thorax shining, impunctate, almost glabrous ; 



